HAProxyvs
Nginx


Nginx: More approachable and doubles as a web server, with less specialised balancing
Overview
HAProxy is an open-source load balancer and proxy for TCP and HTTP applications, with a long reputation for handling very high connection volumes on modest hardware. It is used in front of some of the largest sites on the internet. Its strengths are performance and control: detailed health checking, connection queueing, rate limiting and traffic rules expressed with real precision. Its cost is a configuration language that assumes you know what you are doing, and a stats interface that is functional rather than pleasant.
The honest half
Concrete and checkable, so you can decide whether any of them matter to you. This is the half of a review a vendor will not write about HAProxy.
Cross-shopped
Each pairing was judged by two reviewers asking whether a buyer would genuinely weigh the two against each other. The ones that failed were deleted rather than published.


Nginx: More approachable and doubles as a web server, with less specialised balancing


Caddy: Automatic HTTPS and far simpler configuration, at lower peak throughput
Pricing
Taken from the vendor's own pricing page. Prices move, so check before you buy.
HAProxy
Free
Capabilities
High throughput
Handles very large connection counts with low CPU and memory
Layer 4 and 7
Balances raw TCP and HTTP with content-aware routing
Health checking
Detailed active and passive checks with configurable thresholds
Rate limiting and ACLs
Fine-grained traffic control expressed in configuration
Answered, with sources
Each answer names the page it came from, so you can check it rather than take our word for it.
Yes, the community version is open source. HAProxy Technologies sells HAProxy Enterprise separately.
HAProxy is a specialist load balancer with deeper balancing and health-check features. Nginx also serves static content and is more approachable, which is why it is more common as a general web server.
No. Certificate issuance and renewal are external, unlike Caddy where it is automatic.
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Softwr does not host reviews and shows no star rating for HAProxy, because a rating we did not collect is not ours to publish. What is here is the pricing and platform detail from the vendor’s own pages, limitations we could state concretely, and alternatives a reviewer confirmed people weigh against it. Tell us if any of it is wrong.
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Every tier, and where the cost actually lands
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